Update KB4023057 is being released again for Windows 10 v1511 to 21H1


Level 36
Nov 10, 2017
In Groundhog Day, Phil Connors is trapped in a time loop in which he relives the same day over and over again. Some Windows 10 administrators may feel the same way when it comes the the Windows 10 update KB4023057, which Microsoft releases regularly anew.

Two mention just two previous events: In September 2018, Microsoft pushed the update to supported versions of Windows 10, and revealed little about the update itself, only that it addressed issues that could prevent "important Windows updates from being installed".

In August 2020, the update was released again, with the same description and no new information, other than the updated list of supported Windows 10 versions.

It is June 2021 now, and Microsoft released KB4023057 again; this time for all versions of the operating system from Windows 10 version 1511 to the latest Windows 10 version 21H1.

The rest and must read it (important)


Staff member
Jan 8, 2011
Quote from article shared above.
Microsoft notes that the update may make modifications to the system, including:
  • Resetting network settings.
  • Cleaning up Registry keys that may prevent the installation of updates.
  • Repair disabled or corrupted Windows operating system components related to the updating of the installed version of Windows 10.
  • Compress files in the user profile directory to free up disk space.
  • Reset the Windows Update database to "repair the problems that could prevent updates from installing successfully".
While that sounds useful to Windows 10 customers who are stuck on a particular version, others may want it nowhere near their systems because of the changes that it could make on them.